bakewell



1N@ Model.) 2 sheets-sheet 1.

' J. K. BAKEWBL'L.

EXPLDSIVE PROJEGTILE AND METHOD 0F FIRING SAME. No. 572,461. Patented Dec. l, 1896.

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(No Model.) 2 Sheets-Sheet 2.

EXPLOSIVE PROJEGTILB AND 'METH ooooooooooooo E.

' Patented Deo. 1, 1896.

be fired from .fw Unire@ To fdl who/11, if lll-uy fumier/n Be it known that l, JAMES K. BAKEWELL, of Allegheny, in the eountyof Allegheny and Stateof Pennsylvania, have invenied a new and useful Improvement in Explosive lrojee-tiles and Methodsof Firing elle Same, of

which the following` is a full, clear, and exact deseription, reference being had tothe ae* eoinpanying drawings, forming parlv oiiliis specification, in which Figure l is a vertiealisectional view of a projectile made in accordancewitho my invention. Fig. 2 is an elevation liereo. 3 is avertieal section of a modified forni of shell, and Fig'. l is a like View ol a modification. .Y 5

ln a prior paient application, Serial (311,705, l have described and claimed an invention consisting in part in charging a projectile with dynamite or like explosive conip0und,=freezing the explosive, so that it may agun with Safety, and lthen iiring and exploding the saine. In said appliform of projectile shown and describe',

.rior of the shell.

cation the specific means deseribed in lille descriptive part of the specification foreeeting the explosion is the impact of the projeevile against the target.

'u' The present specification is inl'ended te describe a subsidiary improvement on said invention 5 and it' consist-s in vprovidingfhe pro- 'ectile with means wherel) i durin;Y its iiiwlib the frozen explosive is warmed, so that il; can

. be more readily exploded at the proper time.

In the drawings I have shown a shell rl, having a eavityl, in which is placed a canister c of dynamite or nitroglyeerin or other high explosive which may he rendered less explosive by bringing il. to a low temperature. Dynamite is preferably used. The canister in the cavity Z; is surrounded by a quantity of slowburning powder e, sueh as is capable of producing` heat by its combustion, and afuse e extends from the powder to the exte- .lllxlending between ille exterior of the shell and the cavity Z) are perforations f, lehe purpose of which is to permit the escape of gas from the combustion of the powder (fl. I do not' liinit myself to i.he exact Nor doliniiemyself to any kind of powderer heatprodueing agent, as any of the well-known f slowljnrning;

having; the pe i pioyee dilion. i

(lle model il n equi v The he with dynaniin in Lize saniA by a. suitu or afleii ille shell am heloml ing from.A lll slew-liu s z/ nlay ll zo 'the e n- "ilie shell ee ld from a "shave 'elle ,1in lire eanis er, so that o strikes ille larger iii will ijhly-explesive enn- 'llns se'nre a :'naxiinuin of explove aillent, ie'eller with en lire safely lo those e 'lle ezlnnon, erlhe nilrogrly lerin exien al. the linie el filage ...nilo explode in passing from have lief.

the eamnin.

'ihe minimum desirable amount and the kind el slow-burning' powder i0 'oe used in each ease mailers of easy calcul lion. based upon elle of rile projeeiiilo and ille shortest le;` `lx. of intended ililg'll. Willi a projectile i. lng; long; llig'lll' a slower-hurl:- ing pow( c may llo used 'Lilia-n where the flight; is short and where the linie ol' exposure of the explosive to the thawing inl'lnenee of 'ille poivda le lie correspondingly short. i

`instead el explodingihe conlenls of s1-he canister solely hy inxpaei; of ille projeetile, l may provide the projeriilevfilh a i'ulininale placed upon an anvil in eeinaei Willi alle explosive and adapted lo lie explmled ily a lir ingl-pin in 'ille usual Way when 1h -.projeviile strikes a target, or ihe projeelilo may lio i ranged i'or explosion during;l flight. or linde pendent-ly of nipaeil hf provid"- il. willi a fullninate connected willi a timeline adagied te be ignited either directly by lise charge in the cannon or liyihe soW-lmrning; powderin l ien charged IOOv lprojectile has been fired and the cavity b. I illustrate these modifications in Figs. 3 and 4. In Fig. -3 g is the fulminate set on an anvil hand adapted to be det-- onated by a vfiring-pin t' when the projectile `strikes the target. In this case the slow-burning compound is ignited by the iame from the gun entering the vents or openingsf in the end of the shell. In Fig. 4the fulminate g is adapted to be ignited by a time-fusej, which may be so timed as to explode the charge vat the desired period of time after the before or after it has reached the end of its flight. By bringing the dynamite toA a very low temperature below the freezing-point its' explosion on impact can be vso retarded that the projectile can be made to penetrate a hard object before it Y is brought to a condition for firing bythe act-ion of the heating agent 'aided by the heat generated by impact.

The advantages of my invention in respect of safety of lringand certainty of explosion will be appreciated by those skilled-in the art.

I do :not limit myinvention to the use of nitroglycerin or its compounds, but intend` to cover other equivalent high explosives which are rendered less explosive by cold.

I claiml. The method of firing high explosives herein described which consists in -charging ashell with a high explosive that is rendered less explosive by cold, and reducing the tem` perature 5f the explosive charge to a degree at which premature explosion, and in subjecting the explosive charge during the flight of the projectile to heat created within the projectile. v

2. As a new article of manufacture, an explosive projectile charged with a high explo it may be `fired from a gun without-- tdanger of sive reduced to a temperature sufficiently low to render it practically non-cxplosive when'.

fired from 'a gun, and a heat-giving agent for heatin g the explosive charge during theilight of the projectile.

As a new article of manufacture an explosive projectile consisting of the outer body having a cavity, a case or cylinder in the vprojectile for containingthe explosive, a .charge of a high explosive in a chilled condition, and a charge of a heat-giving agent for thawing the high explosive.

4. As a neuT article of manufacture, an explosive projectile charged with chilled dynamite and a heat-giving agent in the projectile for thawing the chilleddynamite, substantially as described. l 5. As a new article of manufacture, an explosive projectile consisting of the outerV body having a cavity, a case or cylinder inthe projectile for containing the'explosive, a charge of a high explosive in a chilled condition, and a slow-burning compoundfor heating the explosive after the discharge of the projectile from the gun.

consisting of the .vented outer body having a cavity, a case or cylinder in the projectile for containing the explosive, 'a charge of ahigh explosive in a chilled condition, and a slow-burning compound for heating the explosive after the discharge ofv the projectile from the` gun.

In testimony whereof I have hereunto 'set my' hand.

JAMES,y K. n-AKEWELL.

Y 65 6. As a new article of manufact-ure, an explosive projectile 

